CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions		Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents		$ 147	$ 83
Accounts receivable, net		860	797
Accrued unbilled revenues		755	764
Inventories		548	610
Regulatory assets		464	424
Derivative instruments		87	44
Prepaid taxes		79	68
Prepayments and other		154	183
Total current assets		3,094	2,973
Property, plant and equipment, net		36,944	34,329
Other assets
Nuclear decommissioning fund and other investments		2,317	2,397
Regulatory assets		3,326	3,005
Derivative instruments		34	48
Deposits and other		272	278
Total other assets		5,949	5,728
Total assets		45,987	43,030
Current liabilities
Current portion of long-term debt		406	457
Short-term debt		1,038	814
Accounts payable		1,237	1,243
Regulatory liabilities	[1]	436	239
Taxes accrued		450	448
Accrued interest		174	174
Dividends payable		195	183
Derivative instruments		61	29
Other		463	501
Total current liabilities		4,460	4,088
Deferred credits and other liabilities
Deferred income taxes		4,165	3,845
Deferred investment tax credits		54	58
Regulatory liabilities	[1]	5,187	5,083
Asset retirement obligations		2,568	2,475
Derivative instruments		129	126
Customer advances		199	193
Pension and employee benefit obligations		994	1,042
Other		206	145
Total deferred credits and other liabilities		13,502	12,967
Capitalization
Long-term debt		15,803	14,520
Long-term debt		1,285	1,269
Additional paid in capital		6,168	5,898
Retained earnings		4,893	4,413
Accumulated other comprehensive loss		(124)	(125)
Common stock — 1,000,000,000 shares authorized of $2.50 par value; 514,036,787 and 507,762,881 shares outstanding at Dec. 31, 2018 and 2017, respectively		12,222	11,455
Total liabilities and equity		$ 45,987	$ 43,030

[1] Revenue subject to refund of $29 million and $15 million for 2018 and 2017, respectively, is included in other current liabilities.